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2 Sheets Sheet l.

(No Model.)

J. DEMAREST.

GISTBRN FOR WATER GLOSETS.

Patented Feb.` 5, 1884.

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(No Model.) 2 sheets-sheen 2: J. DEMARBST.

GISTBRN POR WATER GLOSBTS. No. 292,901. Patented Feb. 5, 1884.

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JOHN DEMAREST, OF NEWY YORK, N. Y., ASSIG-NOR TO THE J. L. 'liHl'lT IRON VORKS, OF SAB/[E PLACE.

CISTERN FOR WATER-CLOSETS.

SPECIFICATION forming part of Letters Patent No. 292,901, dated February 5, 184

l Application filed July 21,1853. (No model.)

To @ZZ who/rt it may concern,.-

Be it known that I, JOHN Dmmnns'r, ol the city and State of New York, have invented an Improvement in Gisterns for Tater-Closets, of which the following is a specification.

There cisterns are used with water-closets, it often happens that the necessary amount of water is not supplied to the basin to wash it v thoroughly, in consequence of the pull being lifted and dropped suddenly. Frequently the pull is kept partly raised, in order that a continuous supply of water may run through the cistern into the water-closet.

' The object of my invention is to insure sufficient water passing to the water-closet to thoroughly wash out the basin under all cireumstances of use, and also to prevent the water running into the cistern when the pull is raised and held and the valve of the discharge-pipe is off its seat, thereby preventing` waste of water.

In the drawings, Figure is a vertical longitudinal section ofthe cistern and valve. Fig. is a plan of the same, and Fig. 3 is a section at the line w a', Fig. 1.

a c are the sides, b b the ends, and c the bottom, ofthe cistern, all preferablyin one piece' of cast-iron. There is an opening in the bottom ofthe cistcrn for the pipe el, to which the pipe leading to the watercloset is coupled, and said pipe d is secured to the cistern by the nut 2.

e is a valve-seat at the upper end of d.

The parts thus far described are of usual character.

j is a lloat at one end of the rod g, and the other end of said rod is pivoted at 3. This rod acts by the movement of the float to open or close the valve p in the delivery-pipe 1 and admit or shut oli. the supply of water to the cistern.

h is the lever that is operated by the wire or chain fi, connected with the water-closet pull, and said lever is pivoted at 6 in bearing upon the top of the cistern. rIhere is a slotted arm, t, suspended from the lever h by the pin or screw 5,and the rod g ofthe float passes through this slotted arm, for a purpose hereinafter explained.

The valve k is made with a slotted tubular portion, I5, within the pipe d, forming a guide for the valve, and at a there is a ring of india` rubber in a groove at the lower part of the tube Z. Around this tube Z there is a tube,l m, supported bythe arms 8 8 from l, andthe bottom of the tube ml is open, but the top is either made in one with said tube, or else closed airtight by a screw-cap, as shown. There is suf cient space between the tubes l and m to allow the water in the cistern to rise freely in said space to the same height as in the cistern.

I have shown a rod, e, screwed into the cup ofthe tube wz., and passing through a slot in the lever, and provided with button end fu, for said lever to act againstin raising the valve lr. Then the water-closet pull is raised, the lever h raises the valve k from its seat and the water rushes through the slotted portion of the valve to the pipe d and water-closet, and if the pull is kept raised sufficiently long all the water in the cistern passes to the water-closet basin. Vhile the pull has been kept raised the float has not descended as the water fell in the cistern, because the arm -held up the rod g'of the float; hence the valve p was kept closed `while the cistern was discharging; but so soon as the closetpull is released the lever h falls and allows the valve '/i: to drop to its seat, and at the same time the rod g and its loat fall, opening the valve p after L has closed, and allowing the water to run in and fill the cistern, when the valve p is again closed by the rising ofthe float. If the pull is raised and dropped suddenly, the water at rst rushes through the valve-seat; but as soon as the valve L closes upon its seat then the vacuum produced in the tube Z causes the water in the space between the tubes l and m to rise and iiow over into the tube Z, and away by the pipe cl, and this siphon action continues until the Water in the eistern has descended to the level of the mouth of the tube m. By this means nearly the same amount ofwater passes to the water-closet basin, no matter whether the pull is raised suddenly and dropped, or whether the pull is kept raised, and by conf necting the i'loatrod with the lever 7L by the slotted arm the lever h cannot be held in such a position that there will be a continuous discharge of water from the delivery-pipe through the cistern into the water-closet, because the arm t holds up the float-rod whenever the closetpull is raised Aand the lever h operated, and said rod is kept raised so long as the valve la is off its seat, thereby keeping the `valve p IOO closed., Then the closet-pull is released, the valvel k first closes upon its seat, and the furth erv descent of the lever h, arni t, and float and rod g permits the latter to open the valve p 5 and Vallows the water to run into the eistern. The length of the slot in t is such that the ioat is allowed to rise when the water runs into the cistern, and when the water has reached a determined level the rod lifts the valve and shuts 1o' Oil' the supply of waterv to the eistern. The

tube or pipe Z of the valve is also the overflowpipe for cistern.

The valve k and tubes Z m may be guided in any well-known manner. i 5 I claim as my inventionl. The combination, in a valve for watereloset eisterns, of the tube Z, a ring, of rubber or other elastic material, at the lower end of said tube, and the tube m, supported by and 2o surrounding the-tubeZ, and made with an open lower end and closed top. substantially as and for the purposes specified.

2. The combination, in a valve for watercloset cisterns, of the tube Z, a ring, of rubber or other elastic material, at the lower end of 2 5 said tube, the tube m, supported by and surrounding the tube Z, and having an open lower end and Closed top, and the slotted tubular guide below the lower end of tube Z, substantially as and for the purposes set forth. t 3o 3. In a watercloset eistern, the valve k, open tube Z, tube Im, closed at the top, and valveseat e, in combination with the lever h, slotted arm t, iloatf, and rodg, the latter within the slot of the arm t, andthe valve p, operated by 35 said float, substantially as and for thepurposes set forth. v

Signed by me this 16th day of July, A. D.' 1883.

JOHN DEMAR-EST.

Vituesses: 4

Gno. T. IINCKNEY, CHAs. H. SMITH. 

